171016986 has 64 divisors (see below), whose sum is σ = 421585920. Its totient is φ = 45152640.

The previous prime is 171016949. The next prime is 171016999. The reversal of 171016986 is 689610171.

171016986 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30105 + ... + 35331.

It is an arithmetic number, because the mean of its divisors is an integer number (6587280).

Almost surely, 2^171016986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171016986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210792960).

171016986 is an abundant number, since it is smaller than the sum of its proper divisors (250568934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171016986 is a wasteful number, since it uses less digits than its factorization.

171016986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5299.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 171016986 is about 13077.3462904368. The cubic root of 171016986 is about 555.0682880019.

The spelling of 171016986 in words is "one hundred seventy-one million, sixteen thousand, nine hundred eighty-six".